<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 绝对路径 -->
    <a href="http://www.baidu.com">百度</a>
    <br>
    <!-- 这样写法也会发起请求到 jd -->
    <a href="//jd.com">京东</a>
    <br>
    <!-- 这样写法会发起请求：请求路径 + /search 做拼接 -->
    <a href="/search"></a>

    

</body>
</html>